- Sandwich Shop Restaurants, Donalsonville
- Satellite & Cable TV Equipment & Systems, Donalsonville
- Satellite Communication Downlinking & Uplinking, Donalsonville
- Satellite Dish Antennas & Equipment Dealers, Donalsonville
- Seafood Restaurants, Donalsonville
- Secondary Schools, Donalsonville
- Security Brokers & Dealers, Donalsonville
- Security Services, Donalsonville
- Senior Citizens Service & Health Organizations, Donalsonville
- Septic Tanks & Systems, Donalsonville - Wholesale, Dealers & Suppliers
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- Shopping & Shopping Services, Donalsonville
- Snack Foods, Donalsonville
- Social Services & Welfare, Donalsonville
- Sod & Sodding Service, Donalsonville
- Sod Farms, Donalsonville
- Specialty Animal Services, Donalsonville
- Specialty Stores, Donalsonville
- Sporting Goods Stores, Donalsonville
- State Government, Donalsonville
- Stock Yards, Donalsonville
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